Bypass velocity control of gas pipeline defect inspection tools;

Leak detection on gas pipeline with the distributed fiber-optic sensing technology;

Fracture control of gas pipeline

Application of dust detection device in high pressure natural gas pipeline;

With the initiation of such important national natural gas pipeline project as Sichuan-to-East gas transmission,to develop pipeline simulation software with independent intellectual property is on the trend.

This paper introduces the investigation results of Carsbad natural gas pipeline accident, and points out that the internal corrosion control is the direct cause for this accident.

Based on an analysis of the optimal design of natural gas pipeline networks made by many researchers in the world,this paper discussed some frequently used optimal design methods and analyzed the advantage and disadvantage of these methods.

Natural gas pipeline network, demanding gigantic investment and operating costs, is one of the most important infrastructures in the natural gas industry.

The high-pressure natural gas pipeline network is the city of main energy transportation line.

Consumable gas of compressor stations was not taken into consideration when branched gas pipeline networks flow equations were described with the incidence matrix method in the past,which would result in unavoidable deviation.